Stratigraphic-Sedimentological Investigation of Mississippi River Bank Failure, Fort Jackson, Louisiana,
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
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The report describes a stratigraphical-sedimentological investigation of soil samples undetaken to help interpret the causes of bank failures and recessions along the Mississippi River bend west of Fort Jackson, La. This bend, the last in the river before it flows into the Gulf of Mexico, lies approximately 60 air miles southeast of New Orleans and about 21.5 river miles above Head of Passes. According to observations and hydrographic surveys by the U. S. Army Engineer District, New Orleans, bank recession by progressive erosion is active in the entire band area, but is supplemented by deep bank failures in the area lying between survey ranges 10-D and 12. Individual failures are known to have occurred just prior to 1934, in 1947, and between 1958 and 1962. Since each failure has destroyed an area about 150 to 200 ft wide measured perpendicular to the bank between the levee and the bank, the levee is progressively being threatened.
- Geology, Geochemistry and Mineralogy